Leonard h



Reisaued July so, 192a ITED 'STATESKPATENT, OFFICE.

LEONARD H. ENGL'UND, OF WINONA, M TOBY, INC., OF ST. PAUL, MINNIE Re.l7,383

INNESOTA, ASSIGNOR TO ECONOMICS LABORA- SOTA, A CORPORATION OF DELAWARE.

CLEANING COMPOSITION WITH A FLUORESCENT CONCENTRATION INDICATOR. v

No Drawing. Original No. 1,584,022, dated May 11, 1926, Serial Application for reissue filed April 30, 1928.

This invention relates to a non-saponaceous :cleaning composition, its object being particularly to provide improved non-saponaceous, 1n connection composition being My inventi use of tri-so momum salt,

monium. sulphate,

will produce pound. I

In carrying alkaline cleaning compositions,

and,

therewith, means indicating to the user the strength of the amount of such used.

on relates particularly to the dium phosphate and an amas ammonium chloride or amthat, dissolved in water,

a clear, colorless. or substantially so, non-saponaceous cleaning comout tion, the ammonium salt, as the ammonium chloride or ammonium sulphate, erably bear the relationsh'p should prefmixture of two per cent. While ammonium chloride and ammonium sulphate are in themselves neutral salts,

when ammonium chloride is brought together with the trisodium phosphate in the presence of water,

there is liberated ammonium, dibasic sodium phosphate, and ride, and, when the ammonium used it liberates the sodium chloride. solutions is alkaline.

sodium caustic soda,

sulphate is sulphate instead of The "reaction of these These ammonium salts, as the ammonium chloride or ammonium sulphate,

combined with the tri-sodium phosphate in a mixture wherein the percentage by weight of the salt is two per cent constitutes a non saponaceous alkaline cleaning composition,

which yields a clear and colorless solution having a similar appearance to water.

I have found that by giving this normally clear and colorless solution the of reflecting and tr portion to the stren user will be caused proper amount of the solution. in proport on to the cleaning strength being fixed in the users mm reaction to the depth of color or light refleeting properties.

roperties ansmitting lig t in pro gth of the solution, the to instinctively use the so of by the eration, the d To accomplish the above results I addto the above compound in its (1 cinolplithalein hydride) one to three (tetra-oxyp or derivatives thereof,

thousand to one to five: thousand state, diresorthalophenonanin the. rate of by weight in the.

sodium chloin a compoundof No. 739,205, filed September 22, 1924. Serial No. 274,155.

I amaware that it is old to add to transparent soap fluorescent bodies so that the cake of soap will have a pleasing appearance, but, the objects achieved in a soap thus treated. The soapy of my invention" are not or saponaceous characteristics of the soap are in that case the indication of the amount of soap being used. The fluorescent body has in the manufacture of the soap assumed its approximate full depth of color or fluorescent quantities and, when the soap thus treated is used, the contained fluorescent body constitutes no indication of the strength of the amount of soap being used. It is, of course, not necessary that there be such an indication a saponaceous character, as the very saponaceous characteristics give the desired indication.

I claim:

1. A new composition of matter, consisting of a non-saponaceous, alkaline cleaning compound that will form acolorless solution upon the adding of water and afluorescent body added to said compound in its dry state in the substantial proportion of one to three .thousand to one to five thousand parts by weight of the fluorescent body to the remainder of the compound. a V

2. A cleaning composition with a fluorescent concentration indicator, consisting of a granular tri-sodium phosphate, and a granular ammonium salt, which, ,when mixed, forms a crystal-like mixture. and, when dissolved in water, will produce a colorless, 'clear, cleaning compound having an alkaline reaction in the presence of water, anda fluorescent body added thereto to act as a concentration indicator for the purpose set forth. Y In testimony whereof I ailix my signaturel LEONARD H. ENGLUND 

